diff options
Diffstat (limited to 'drivers/usb/chipidea/usbmisc_imx.c')
| -rw-r--r-- | drivers/usb/chipidea/usbmisc_imx.c | 738 |
1 files changed, 724 insertions, 14 deletions
diff --git a/drivers/usb/chipidea/usbmisc_imx.c b/drivers/usb/chipidea/usbmisc_imx.c index 20d02a5e418d..b7d21b052c19 100644 --- a/drivers/usb/chipidea/usbmisc_imx.c +++ b/drivers/usb/chipidea/usbmisc_imx.c @@ -1,5 +1,6 @@ /* - * Copyright 2012 Freescale Semiconductor, Inc. + * Copyright 2012-2016 Freescale Semiconductor, Inc. + * Copyright 2017 NXP * * The code contained herein is licensed under the GNU General Public * License. You may obtain a copy of the GNU General Public License @@ -14,6 +15,8 @@ #include <linux/err.h> #include <linux/io.h> #include <linux/delay.h> +#include <linux/regmap.h> +#include <linux/regulator/consumer.h> #include "ci_hdrc_imx.h" @@ -57,11 +60,24 @@ #define MX6_BM_NON_BURST_SETTING BIT(1) #define MX6_BM_OVER_CUR_DIS BIT(7) #define MX6_BM_OVER_CUR_POLARITY BIT(8) +#define MX6_BM_PRW_POLARITY BIT(9) #define MX6_BM_WAKEUP_ENABLE BIT(10) +#define MX6_BM_UTMI_ON_CLOCK BIT(13) #define MX6_BM_ID_WAKEUP BIT(16) #define MX6_BM_VBUS_WAKEUP BIT(17) #define MX6SX_BM_DPDM_WAKEUP_EN BIT(29) #define MX6_BM_WAKEUP_INTR BIT(31) + +#define MX6_USB_HSIC_CTRL_OFFSET 0x10 +/* Send resume signal without 480Mhz PHY clock */ +#define MX6SX_BM_HSIC_AUTO_RESUME BIT(23) +/* set before portsc.suspendM = 1 */ +#define MX6_BM_HSIC_DEV_CONN BIT(21) +/* HSIC enable */ +#define MX6_BM_HSIC_EN BIT(12) +/* Force HSIC module 480M clock on, even when in Host is in suspend mode */ +#define MX6_BM_HSIC_CLK_ON BIT(11) + #define MX6_USB_OTG1_PHY_CTRL 0x18 /* For imx6dql, it is host-only controller, for later imx6, it is otg's */ #define MX6_USB_OTG2_PHY_CTRL 0x1c @@ -74,12 +90,50 @@ #define VF610_OVER_CUR_DIS BIT(7) #define MX7D_USBNC_USB_CTRL2 0x4 +#define MX7D_USBNC_USB_CTRL2_OPMODE_OVERRIDE_EN BIT(8) +#define MX7D_USBNC_USB_CTRL2_OPMODE_OVERRIDE_MASK (BIT(7) | BIT(6)) +#define MX7D_USBNC_USB_CTRL2_OPMODE(v) (v << 6) +#define MX7D_USBNC_USB_CTRL2_OPMODE_NON_DRIVING MX7D_USBNC_USB_CTRL2_OPMODE(1) +#define MX7D_USBNC_HSIC_AUTO_RESUME BIT(2) + #define MX7D_USB_VBUS_WAKEUP_SOURCE_MASK 0x3 #define MX7D_USB_VBUS_WAKEUP_SOURCE(v) (v << 0) #define MX7D_USB_VBUS_WAKEUP_SOURCE_VBUS MX7D_USB_VBUS_WAKEUP_SOURCE(0) #define MX7D_USB_VBUS_WAKEUP_SOURCE_AVALID MX7D_USB_VBUS_WAKEUP_SOURCE(1) #define MX7D_USB_VBUS_WAKEUP_SOURCE_BVALID MX7D_USB_VBUS_WAKEUP_SOURCE(2) #define MX7D_USB_VBUS_WAKEUP_SOURCE_SESS_END MX7D_USB_VBUS_WAKEUP_SOURCE(3) +#define MX7D_USB_TERMSEL_OVERRIDE BIT(4) +#define MX7D_USB_TERMSEL_OVERRIDE_EN BIT(5) + +#define MX7D_USB_OTG_PHY_CFG2_CHRG_DCDENB BIT(3) +#define MX7D_USB_OTG_PHY_CFG2_CHRG_VDATSRCENB0 BIT(2) +#define MX7D_USB_OTG_PHY_CFG2_CHRG_VDATDETENB0 BIT(1) +#define MX7D_USB_OTG_PHY_CFG2_CHRG_CHRGSEL BIT(0) +#define MX7D_USB_OTG_PHY_CFG2 0x34 + +#define MX7D_USB_OTG_PHY_STATUS 0x3c +#define MX7D_USB_OTG_PHY_STATUS_CHRGDET BIT(29) +#define MX7D_USB_OTG_PHY_STATUS_VBUS_VLD BIT(3) +#define MX7D_USB_OTG_PHY_STATUS_LINE_STATE1 BIT(1) +#define MX7D_USB_OTG_PHY_STATUS_LINE_STATE0 BIT(0) + +#define ANADIG_ANA_MISC0 0x150 +#define ANADIG_ANA_MISC0_SET 0x154 +#define ANADIG_ANA_MISC0_CLK_DELAY(x) ((x >> 26) & 0x7) + +#define ANADIG_USB1_CHRG_DETECT_SET 0x1b4 +#define ANADIG_USB1_CHRG_DETECT_CLR 0x1b8 +#define ANADIG_USB1_CHRG_DETECT_EN_B BIT(20) +#define ANADIG_USB1_CHRG_DETECT_CHK_CHRG_B BIT(19) +#define ANADIG_USB1_CHRG_DETECT_CHK_CONTACT BIT(18) + +#define ANADIG_USB1_VBUS_DET_STAT 0x1c0 +#define ANADIG_USB1_VBUS_DET_STAT_VBUS_VALID BIT(3) + +#define ANADIG_USB1_CHRG_DET_STAT 0x1d0 +#define ANADIG_USB1_CHRG_DET_STAT_DM_STATE BIT(2) +#define ANADIG_USB1_CHRG_DET_STAT_CHRG_DETECTED BIT(1) +#define ANADIG_USB1_CHRG_DET_STAT_PLUG_CONTACT BIT(0) struct usbmisc_ops { /* It's called once when probe a usb device */ @@ -88,6 +142,19 @@ struct usbmisc_ops { int (*post)(struct imx_usbmisc_data *data); /* It's called when we need to enable/disable usb wakeup */ int (*set_wakeup)(struct imx_usbmisc_data *data, bool enabled); + /* usb charger contact and primary detection */ + int (*charger_primary_detection)(struct imx_usbmisc_data *data); + /* usb charger secondary detection */ + int (*charger_secondary_detection)(struct imx_usbmisc_data *data); + /* It's called when system resume from usb power lost */ + int (*power_lost_check)(struct imx_usbmisc_data *data); + /* It's called before setting portsc.suspendM */ + int (*hsic_set_connect)(struct imx_usbmisc_data *data); + /* It's called during suspend/resume */ + int (*hsic_set_clk)(struct imx_usbmisc_data *data, bool enabled); + /* override UTMI termination select */ + int (*term_select_override)(struct imx_usbmisc_data *data, + bool enable, int val); }; struct imx_usbmisc { @@ -96,6 +163,8 @@ struct imx_usbmisc { const struct usbmisc_ops *ops; }; +static struct regulator *vbus_wakeup_reg; + static int usbmisc_imx25_init(struct imx_usbmisc_data *data) { struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev); @@ -227,15 +296,86 @@ static int usbmisc_imx53_init(struct imx_usbmisc_data *data) return 0; } +static int usbmisc_imx6_hsic_set_connect(struct imx_usbmisc_data *data) +{ + unsigned long flags; + u32 val, offset; + struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev); + int ret = 0; + + spin_lock_irqsave(&usbmisc->lock, flags); + if (data->index == 2 || data->index == 3) { + offset = (data->index - 2) * 4; + } else if (data->index == 0) { + /* + * For controllers later than imx7d (imx7d is included), + * each controller has its own non core register region. + * And the controllers before than imx7d, the 1st controller + * is not HSIC controller. + */ + offset = 0; + } else { + dev_err(data->dev, "index is error for usbmisc\n"); + offset = 0; + ret = -EINVAL; + } + + val = readl(usbmisc->base + MX6_USB_HSIC_CTRL_OFFSET + offset); + if (!(val & MX6_BM_HSIC_DEV_CONN)) + writel(val | MX6_BM_HSIC_DEV_CONN, + usbmisc->base + MX6_USB_HSIC_CTRL_OFFSET + offset); + spin_unlock_irqrestore(&usbmisc->lock, flags); + + return ret; +} + +static int usbmisc_imx6_hsic_set_clk(struct imx_usbmisc_data *data, bool on) +{ + unsigned long flags; + u32 val, offset; + struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev); + int ret = 0; + + spin_lock_irqsave(&usbmisc->lock, flags); + if (data->index == 2 || data->index == 3) { + offset = (data->index - 2) * 4; + } else if (data->index == 0) { + offset = 0; + } else { + dev_err(data->dev, "index is error for usbmisc\n"); + offset = 0; + ret = -EINVAL; + } + + val = readl(usbmisc->base + MX6_USB_HSIC_CTRL_OFFSET + offset); + val |= MX6_BM_HSIC_EN | MX6_BM_HSIC_CLK_ON; + if (on) + val |= MX6_BM_HSIC_CLK_ON; + else + val &= ~MX6_BM_HSIC_CLK_ON; + writel(val, usbmisc->base + MX6_USB_HSIC_CTRL_OFFSET + offset); + spin_unlock_irqrestore(&usbmisc->lock, flags); + + return 0; +} + +static u32 imx6q_finalize_wakeup_setting(struct imx_usbmisc_data *data) +{ + if (data->available_role == USB_DR_MODE_PERIPHERAL) + return MX6_BM_VBUS_WAKEUP; + else if (data->available_role == USB_DR_MODE_OTG) + return MX6_BM_VBUS_WAKEUP | MX6_BM_ID_WAKEUP; + + return 0; +} + static int usbmisc_imx6q_set_wakeup (struct imx_usbmisc_data *data, bool enabled) { struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev); unsigned long flags; - u32 val; - u32 wakeup_setting = (MX6_BM_WAKEUP_ENABLE | - MX6_BM_VBUS_WAKEUP | MX6_BM_ID_WAKEUP); int ret = 0; + u32 val, wakeup_setting = MX6_BM_WAKEUP_ENABLE; if (data->index > 3) return -EINVAL; @@ -243,15 +383,20 @@ static int usbmisc_imx6q_set_wakeup spin_lock_irqsave(&usbmisc->lock, flags); val = readl(usbmisc->base + data->index * 4); if (enabled) { - val |= wakeup_setting; - writel(val, usbmisc->base + data->index * 4); + wakeup_setting |= imx6q_finalize_wakeup_setting(data); + writel(val | wakeup_setting, usbmisc->base + data->index * 4); + spin_unlock_irqrestore(&usbmisc->lock, flags); + if (vbus_wakeup_reg) + ret = regulator_enable(vbus_wakeup_reg); } else { if (val & MX6_BM_WAKEUP_INTR) pr_debug("wakeup int at ci_hdrc.%d\n", data->index); - val &= ~wakeup_setting; - writel(val, usbmisc->base + data->index * 4); + wakeup_setting |= MX6_BM_VBUS_WAKEUP | MX6_BM_ID_WAKEUP; + writel(val & ~wakeup_setting, usbmisc->base + data->index * 4); + spin_unlock_irqrestore(&usbmisc->lock, flags); + if (vbus_wakeup_reg && regulator_is_enabled(vbus_wakeup_reg)) + regulator_disable(vbus_wakeup_reg); } - spin_unlock_irqrestore(&usbmisc->lock, flags); return ret; } @@ -260,7 +405,7 @@ static int usbmisc_imx6q_init(struct imx_usbmisc_data *data) { struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev); unsigned long flags; - u32 reg; + u32 reg, val; if (data->index > 3) return -EINVAL; @@ -281,6 +426,27 @@ static int usbmisc_imx6q_init(struct imx_usbmisc_data *data) writel(reg | MX6_BM_NON_BURST_SETTING, usbmisc->base + data->index * 4); + /* For HSIC controller */ + if (data->index == 2 || data->index == 3) { + val = readl(usbmisc->base + data->index * 4); + writel(val | MX6_BM_UTMI_ON_CLOCK, + usbmisc->base + data->index * 4); + val = readl(usbmisc->base + MX6_USB_HSIC_CTRL_OFFSET + + (data->index - 2) * 4); + val |= MX6_BM_HSIC_EN | MX6_BM_HSIC_CLK_ON; + writel(val, usbmisc->base + MX6_USB_HSIC_CTRL_OFFSET + + (data->index - 2) * 4); + + /* + * Need to add delay to wait 24M OSC to be stable, + * It is board specific. + */ + regmap_read(data->anatop, ANADIG_ANA_MISC0, &val); + /* 0 <= data->osc_clkgate_delay <= 7 */ + if (data->osc_clkgate_delay > ANADIG_ANA_MISC0_CLK_DELAY(val)) + regmap_write(data->anatop, ANADIG_ANA_MISC0_SET, + (data->osc_clkgate_delay) << 26); + } spin_unlock_irqrestore(&usbmisc->lock, flags); usbmisc_imx6q_set_wakeup(data, false); @@ -297,9 +463,9 @@ static int usbmisc_imx6sx_init(struct imx_usbmisc_data *data) usbmisc_imx6q_init(data); + spin_lock_irqsave(&usbmisc->lock, flags); if (data->index == 0 || data->index == 1) { reg = usbmisc->base + MX6_USB_OTG1_PHY_CTRL + data->index * 4; - spin_lock_irqsave(&usbmisc->lock, flags); /* Set vbus wakeup source as bvalid */ val = readl(reg); writel(val | MX6SX_USB_VBUS_WAKEUP_SOURCE_BVALID, reg); @@ -310,9 +476,18 @@ static int usbmisc_imx6sx_init(struct imx_usbmisc_data *data) val = readl(usbmisc->base + data->index * 4); writel(val & ~MX6SX_BM_DPDM_WAKEUP_EN, usbmisc->base + data->index * 4); - spin_unlock_irqrestore(&usbmisc->lock, flags); } + /* For HSIC controller */ + if (data->index == 2) { + val = readl(usbmisc->base + MX6_USB_HSIC_CTRL_OFFSET + + (data->index - 2) * 4); + val |= MX6SX_BM_HSIC_AUTO_RESUME; + writel(val, usbmisc->base + MX6_USB_HSIC_CTRL_OFFSET + + (data->index - 2) * 4); + } + spin_unlock_irqrestore(&usbmisc->lock, flags); + return 0; } @@ -342,16 +517,17 @@ static int usbmisc_imx7d_set_wakeup struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev); unsigned long flags; u32 val; - u32 wakeup_setting = (MX6_BM_WAKEUP_ENABLE | - MX6_BM_VBUS_WAKEUP | MX6_BM_ID_WAKEUP); + u32 wakeup_setting = MX6_BM_WAKEUP_ENABLE; spin_lock_irqsave(&usbmisc->lock, flags); val = readl(usbmisc->base); if (enabled) { + wakeup_setting |= imx6q_finalize_wakeup_setting(data); writel(val | wakeup_setting, usbmisc->base); } else { if (val & MX6_BM_WAKEUP_INTR) dev_dbg(data->dev, "wakeup int\n"); + wakeup_setting |= MX6_BM_VBUS_WAKEUP | MX6_BM_ID_WAKEUP; writel(val & ~wakeup_setting, usbmisc->base); } spin_unlock_irqrestore(&usbmisc->lock, flags); @@ -376,12 +552,33 @@ static int usbmisc_imx7d_init(struct imx_usbmisc_data *data) /* High active */ reg &= ~(MX6_BM_OVER_CUR_DIS | MX6_BM_OVER_CUR_POLARITY); } + + if (data->pwr_polarity) + reg |= MX6_BM_PRW_POLARITY; + writel(reg, usbmisc->base); + /* SoC non-burst setting */ + reg = readl(usbmisc->base); + writel(reg | MX6_BM_NON_BURST_SETTING, usbmisc->base); + reg = readl(usbmisc->base + MX7D_USBNC_USB_CTRL2); reg &= ~MX7D_USB_VBUS_WAKEUP_SOURCE_MASK; writel(reg | MX7D_USB_VBUS_WAKEUP_SOURCE_BVALID, usbmisc->base + MX7D_USBNC_USB_CTRL2); + + if (data->hsic) { + reg = readl(usbmisc->base); + writel(reg | MX6_BM_UTMI_ON_CLOCK, usbmisc->base); + + reg = readl(usbmisc->base + MX6_USB_HSIC_CTRL_OFFSET); + reg |= MX6_BM_HSIC_EN | MX6_BM_HSIC_CLK_ON; + writel(reg, usbmisc->base + MX6_USB_HSIC_CTRL_OFFSET); + + reg = readl(usbmisc->base + MX7D_USBNC_USB_CTRL2); + writel(reg | MX7D_USBNC_HSIC_AUTO_RESUME, + usbmisc->base + MX7D_USBNC_USB_CTRL2); + } spin_unlock_irqrestore(&usbmisc->lock, flags); usbmisc_imx7d_set_wakeup(data, false); @@ -389,6 +586,371 @@ static int usbmisc_imx7d_init(struct imx_usbmisc_data *data) return 0; } +static int usbmisc_imx7d_power_lost_check(struct imx_usbmisc_data *data) +{ + struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev); + unsigned long flags; + u32 val; + + spin_lock_irqsave(&usbmisc->lock, flags); + val = readl(usbmisc->base); + spin_unlock_irqrestore(&usbmisc->lock, flags); + /* + * Here use a power on reset value to judge + * if the controller experienced a power lost + */ + if (val == 0x30001000) + return 1; + else + return 0; +} + + +/***************************************************************************/ +/* imx usb charger detecton */ +/***************************************************************************/ +static void usb_charger_is_present(struct usb_charger *charger, bool present) +{ + if (present) + charger->present = 1; + else + charger->present = 0; + + power_supply_changed(charger->psy); + sysfs_notify(&charger->psy->dev.kobj, NULL, "present"); +} + +static void imx6_disable_charger_detector(struct imx_usbmisc_data *data) +{ + struct regmap *regmap = data->anatop; + + regmap_write(regmap, ANADIG_USB1_CHRG_DETECT_SET, + ANADIG_USB1_CHRG_DETECT_EN_B | + ANADIG_USB1_CHRG_DETECT_CHK_CHRG_B); +} + +static int imx6_charger_data_contact_detect(struct imx_usbmisc_data *data) +{ + struct regmap *regmap = data->anatop; + struct usb_charger *charger = data->charger; + u32 val; + int i, data_pin_contact_count = 0; + + /* check if vbus is valid */ + regmap_read(regmap, ANADIG_USB1_VBUS_DET_STAT, &val); + if (!(val & ANADIG_USB1_VBUS_DET_STAT_VBUS_VALID)) { + dev_err(charger->dev, "vbus is error\n"); + return -EINVAL; + } + + /* Enable charger detector */ + regmap_write(regmap, ANADIG_USB1_CHRG_DETECT_CLR, + ANADIG_USB1_CHRG_DETECT_EN_B); + /* + * - Do not check whether a charger is connected to the USB port + * - Check whether the USB plug has been in contact with each other + */ + regmap_write(regmap, ANADIG_USB1_CHRG_DETECT_SET, + ANADIG_USB1_CHRG_DETECT_CHK_CONTACT | + ANADIG_USB1_CHRG_DETECT_CHK_CHRG_B); + + /* Check if plug is connected */ + for (i = 0; i < 100; i = i + 1) { + regmap_read(regmap, ANADIG_USB1_CHRG_DET_STAT, &val); + if (val & ANADIG_USB1_CHRG_DET_STAT_PLUG_CONTACT) { + data_pin_contact_count++; + if (data_pin_contact_count > 5) + /* Data pin makes contact */ + break; + else + usleep_range(5000, 10000); + } else { + data_pin_contact_count = 0; + usleep_range(5000, 6000); + } + } + + if (i == 100) { + dev_err(charger->dev, + "VBUS is coming from a dedicated power supply.\n"); + imx6_disable_charger_detector(data); + return -ENXIO; + } + + return 0; +} + +static int imx6_charger_primary_detection(struct imx_usbmisc_data *data) +{ + struct regmap *regmap = data->anatop; + struct usb_charger *charger = data->charger; + u32 val; + int ret; + + ret = imx6_charger_data_contact_detect(data); + if (ret) + return ret; + + /* + * - Do check whether a charger is connected to the USB port + * - Do not Check whether the USB plug has been in contact with + * each other + */ + regmap_write(regmap, ANADIG_USB1_CHRG_DETECT_CLR, + ANADIG_USB1_CHRG_DETECT_CHK_CONTACT | + ANADIG_USB1_CHRG_DETECT_CHK_CHRG_B); + + msleep(100); + + /* Check if it is a charger */ + regmap_read(regmap, ANADIG_USB1_CHRG_DET_STAT, &val); + if (!(val & ANADIG_USB1_CHRG_DET_STAT_CHRG_DETECTED)) { + dev_dbg(charger->dev, "It is a stardard downstream port\n"); + charger->psy_desc.type = POWER_SUPPLY_TYPE_USB; + charger->max_current = 500; + } + + imx6_disable_charger_detector(data); + return 0; +} + +/* + * It must be called after dp is pulled up (from USB controller driver), + * That is used to differentiate DCP and CDP + */ +int imx6_charger_secondary_detection(struct imx_usbmisc_data *data) +{ + struct regmap *regmap = data->anatop; + struct usb_charger *charger = data->charger; + int val; + + msleep(80); + + mutex_lock(&charger->lock); + regmap_read(regmap, ANADIG_USB1_CHRG_DET_STAT, &val); + if (val & ANADIG_USB1_CHRG_DET_STAT_DM_STATE) { + dev_dbg(charger->dev, "It is a dedicate charging port\n"); + charger->psy_desc.type = POWER_SUPPLY_TYPE_USB_DCP; + charger->max_current = 1500; + } else { + dev_dbg(charger->dev, "It is a charging downstream port\n"); + charger->psy_desc.type = POWER_SUPPLY_TYPE_USB_CDP; + charger->max_current = 900; + } + + usb_charger_is_present(charger, true); + mutex_unlock(&charger->lock); + + return 0; +} + +static int usbmisc_imx6sx_power_lost_check(struct imx_usbmisc_data *data) +{ + struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev); + unsigned long flags; + u32 val; + + spin_lock_irqsave(&usbmisc->lock, flags); + val = readl(usbmisc->base + data->index * 4); + spin_unlock_irqrestore(&usbmisc->lock, flags); + /* + * Here use a power on reset value to judge + * if the controller experienced a power lost + */ + if (val == 0x30001000) + return 1; + else + return 0; +} + +static void imx7_disable_charger_detector(struct imx_usbmisc_data *data) +{ + struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev); + unsigned long flags; + u32 val; + + spin_lock_irqsave(&usbmisc->lock, flags); + val = readl(usbmisc->base + MX7D_USB_OTG_PHY_CFG2); + val &= ~(MX7D_USB_OTG_PHY_CFG2_CHRG_DCDENB | + MX7D_USB_OTG_PHY_CFG2_CHRG_VDATSRCENB0 | + MX7D_USB_OTG_PHY_CFG2_CHRG_VDATDETENB0 | + MX7D_USB_OTG_PHY_CFG2_CHRG_CHRGSEL); + writel(val, usbmisc->base + MX7D_USB_OTG_PHY_CFG2); + + /* Set OPMODE to be 2'b00 and disable its override */ + val = readl(usbmisc->base + MX7D_USBNC_USB_CTRL2); + val &= ~MX7D_USBNC_USB_CTRL2_OPMODE_OVERRIDE_MASK; + writel(val, usbmisc->base + MX7D_USBNC_USB_CTRL2); + + val = readl(usbmisc->base + MX7D_USBNC_USB_CTRL2); + writel(val & ~MX7D_USBNC_USB_CTRL2_OPMODE_OVERRIDE_EN, + usbmisc->base + MX7D_USBNC_USB_CTRL2); + spin_unlock_irqrestore(&usbmisc->lock, flags); +} + +static int imx7d_charger_data_contact_detect(struct imx_usbmisc_data *data) +{ + struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev); + struct usb_charger *charger = data->charger; + unsigned long flags; + u32 val; + int i, data_pin_contact_count = 0; + + spin_lock_irqsave(&usbmisc->lock, flags); + + /* check if vbus is valid */ + val = readl(usbmisc->base + MX7D_USB_OTG_PHY_STATUS); + if (!(val & MX7D_USB_OTG_PHY_STATUS_VBUS_VLD)) { + dev_err(charger->dev, "vbus is error\n"); + spin_unlock_irqrestore(&usbmisc->lock, flags); + return -EINVAL; + } + + /* + * - Do not check whether a charger is connected to the USB port + * - Check whether the USB plug has been in contact with each other + */ + val = readl(usbmisc->base + MX7D_USB_OTG_PHY_CFG2); + writel(val | MX7D_USB_OTG_PHY_CFG2_CHRG_DCDENB, + usbmisc->base + MX7D_USB_OTG_PHY_CFG2); + + spin_unlock_irqrestore(&usbmisc->lock, flags); + + /* Check if plug is connected */ + for (i = 0; i < 100; i = i + 1) { + val = readl(usbmisc->base + MX7D_USB_OTG_PHY_STATUS); + if (!(val & MX7D_USB_OTG_PHY_STATUS_LINE_STATE0)) { + if (data_pin_contact_count++ > 5) + /* Data pin makes contact */ + break; + else + usleep_range(5000, 10000); + } else { + data_pin_contact_count = 0; + usleep_range(5000, 6000); + } + } + + if (i == 100) { + dev_err(charger->dev, + "VBUS is coming from a dedicated power supply.\n"); + imx7_disable_charger_detector(data); + return -ENXIO; + } + + return 0; +} + +static int imx7d_charger_primary_detection(struct imx_usbmisc_data *data) +{ + struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev); + struct usb_charger *charger = data->charger; + unsigned long flags; + u32 val; + int ret; + + ret = imx7d_charger_data_contact_detect(data); + if (ret) + return ret; + + spin_lock_irqsave(&usbmisc->lock, flags); + /* Set OPMODE to be non-driving mode */ + val = readl(usbmisc->base + MX7D_USBNC_USB_CTRL2); + val &= ~MX7D_USBNC_USB_CTRL2_OPMODE_OVERRIDE_MASK; + val |= MX7D_USBNC_USB_CTRL2_OPMODE_NON_DRIVING; + writel(val, usbmisc->base + MX7D_USBNC_USB_CTRL2); + + val = readl(usbmisc->base + MX7D_USBNC_USB_CTRL2); + writel(val | MX7D_USBNC_USB_CTRL2_OPMODE_OVERRIDE_EN, + usbmisc->base + MX7D_USBNC_USB_CTRL2); + + /* + * - Do check whether a charger is connected to the USB port + * - Do not Check whether the USB plug has been in contact with + * each other + */ + val = readl(usbmisc->base + MX7D_USB_OTG_PHY_CFG2); + writel(val | MX7D_USB_OTG_PHY_CFG2_CHRG_VDATSRCENB0 | + MX7D_USB_OTG_PHY_CFG2_CHRG_VDATDETENB0, + usbmisc->base + MX7D_USB_OTG_PHY_CFG2); + spin_unlock_irqrestore(&usbmisc->lock, flags); + + usleep_range(1000, 2000); + + /* Check if it is a charger */ + val = readl(usbmisc->base + MX7D_USB_OTG_PHY_STATUS); + if (!(val & MX7D_USB_OTG_PHY_STATUS_CHRGDET)) { + dev_dbg(charger->dev, "It is a stardard downstream port\n"); + charger->psy_desc.type = POWER_SUPPLY_TYPE_USB; + charger->max_current = 500; + } + + imx7_disable_charger_detector(data); + + return 0; +} + +/* + * It must be called after dp is pulled up (from USB controller driver), + * That is used to differentiate DCP and CDP + */ +int imx7d_charger_secondary_detection(struct imx_usbmisc_data *data) +{ + struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev); + struct usb_charger *charger = data->charger; + int val; + + msleep(80); + + mutex_lock(&charger->lock); + val = readl(usbmisc->base + MX7D_USB_OTG_PHY_STATUS); + if (val & MX7D_USB_OTG_PHY_STATUS_LINE_STATE1) { + dev_dbg(charger->dev, "It is a dedicate charging port\n"); + charger->psy_desc.type = POWER_SUPPLY_TYPE_USB_DCP; + charger->max_current = 1500; + } else { + dev_dbg(charger->dev, "It is a charging downstream port\n"); + charger->psy_desc.type = POWER_SUPPLY_TYPE_USB_CDP; + charger->max_current = 900; + } + + usb_charger_is_present(charger, true); + mutex_unlock(&charger->lock); + + return 0; +} + +static int usbmisc_term_select_override(struct imx_usbmisc_data *data, + bool enable, int val) +{ + struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev); + unsigned long flags; + u32 reg; + + spin_lock_irqsave(&usbmisc->lock, flags); + + reg = readl(usbmisc->base + MX7D_USBNC_USB_CTRL2); + if (enable) { + if (val) + writel(reg | MX7D_USB_TERMSEL_OVERRIDE, + usbmisc->base + MX7D_USBNC_USB_CTRL2); + else + writel(reg & ~MX7D_USB_TERMSEL_OVERRIDE, + usbmisc->base + MX7D_USBNC_USB_CTRL2); + + reg = readl(usbmisc->base + MX7D_USBNC_USB_CTRL2); + writel(reg | MX7D_USB_TERMSEL_OVERRIDE_EN, + usbmisc->base + MX7D_USBNC_USB_CTRL2); + } else { + writel(reg & ~MX7D_USB_TERMSEL_OVERRIDE_EN, + usbmisc->base + MX7D_USBNC_USB_CTRL2); + } + + spin_unlock_irqrestore(&usbmisc->lock, flags); + + return 0; +} + static const struct usbmisc_ops imx25_usbmisc_ops = { .init = usbmisc_imx25_init, .post = usbmisc_imx25_post, @@ -405,6 +967,10 @@ static const struct usbmisc_ops imx53_usbmisc_ops = { static const struct usbmisc_ops imx6q_usbmisc_ops = { .set_wakeup = usbmisc_imx6q_set_wakeup, .init = usbmisc_imx6q_init, + .charger_primary_detection = imx6_charger_primary_detection, + .charger_secondary_detection = imx6_charger_secondary_detection, + .hsic_set_connect = usbmisc_imx6_hsic_set_connect, + .hsic_set_clk = usbmisc_imx6_hsic_set_clk, }; static const struct usbmisc_ops vf610_usbmisc_ops = { @@ -414,11 +980,30 @@ static const struct usbmisc_ops vf610_usbmisc_ops = { static const struct usbmisc_ops imx6sx_usbmisc_ops = { .set_wakeup = usbmisc_imx6q_set_wakeup, .init = usbmisc_imx6sx_init, + .charger_primary_detection = imx6_charger_primary_detection, + .charger_secondary_detection = imx6_charger_secondary_detection, + .power_lost_check = usbmisc_imx6sx_power_lost_check, + .hsic_set_connect = usbmisc_imx6_hsic_set_connect, + .hsic_set_clk = usbmisc_imx6_hsic_set_clk, }; static const struct usbmisc_ops imx7d_usbmisc_ops = { .init = usbmisc_imx7d_init, .set_wakeup = usbmisc_imx7d_set_wakeup, + .power_lost_check = usbmisc_imx7d_power_lost_check, + .charger_primary_detection = imx7d_charger_primary_detection, + .charger_secondary_detection = imx7d_charger_secondary_detection, + .term_select_override = usbmisc_term_select_override, + .hsic_set_connect = usbmisc_imx6_hsic_set_connect, + .hsic_set_clk = usbmisc_imx6_hsic_set_clk, +}; + +static const struct usbmisc_ops imx7ulp_usbmisc_ops = { + .init = usbmisc_imx7d_init, + .set_wakeup = usbmisc_imx7d_set_wakeup, + .power_lost_check = usbmisc_imx7d_power_lost_check, + .hsic_set_connect = usbmisc_imx6_hsic_set_connect, + .hsic_set_clk = usbmisc_imx6_hsic_set_clk, }; int imx_usbmisc_init(struct imx_usbmisc_data *data) @@ -463,6 +1048,115 @@ int imx_usbmisc_set_wakeup(struct imx_usbmisc_data *data, bool enabled) } EXPORT_SYMBOL_GPL(imx_usbmisc_set_wakeup); +int imx_usbmisc_charger_detection(struct imx_usbmisc_data *data, bool connect) +{ + struct imx_usbmisc *usbmisc; + struct usb_charger *charger; + int ret = 0; + + if (!data) + return -EINVAL; + + charger = data->charger; + usbmisc = dev_get_drvdata(data->dev); + if (!usbmisc->ops->charger_primary_detection) + return -ENOTSUPP; + + mutex_lock(&charger->lock); + if (connect) { + charger->online = 1; + ret = usbmisc->ops->charger_primary_detection(data); + if (ret) { + dev_err(charger->dev, + "Error occurs during detection: %d\n", + ret); + } else { + if (charger->psy_desc.type == POWER_SUPPLY_TYPE_USB) + usb_charger_is_present(charger, true); + } + } else { + charger->online = 0; + charger->max_current = 0; + charger->psy_desc.type = POWER_SUPPLY_TYPE_MAINS; + + usb_charger_is_present(charger, false); + } + mutex_unlock(&charger->lock); + return ret; +} +EXPORT_SYMBOL_GPL(imx_usbmisc_charger_detection); + +int imx_usbmisc_charger_secondary_detection(struct imx_usbmisc_data *data) +{ + struct imx_usbmisc *usbmisc; + + if (!data) + return 0; + + usbmisc = dev_get_drvdata(data->dev); + if (!usbmisc->ops->charger_secondary_detection) + return 0; + return usbmisc->ops->charger_secondary_detection(data); +} +EXPORT_SYMBOL_GPL(imx_usbmisc_charger_secondary_detection); + +int imx_usbmisc_power_lost_check(struct imx_usbmisc_data *data) +{ + struct imx_usbmisc *usbmisc; + + if (!data) + return 0; + + usbmisc = dev_get_drvdata(data->dev); + if (!usbmisc->ops->power_lost_check) + return 0; + return usbmisc->ops->power_lost_check(data); +} +EXPORT_SYMBOL_GPL(imx_usbmisc_power_lost_check); + +int imx_usbmisc_hsic_set_connect(struct imx_usbmisc_data *data) +{ + struct imx_usbmisc *usbmisc; + + if (!data) + return 0; + + usbmisc = dev_get_drvdata(data->dev); + if (!usbmisc->ops->hsic_set_connect || !data->hsic) + return 0; + return usbmisc->ops->hsic_set_connect(data); +} +EXPORT_SYMBOL_GPL(imx_usbmisc_hsic_set_connect); + +int imx_usbmisc_hsic_set_clk(struct imx_usbmisc_data *data, bool on) +{ + struct imx_usbmisc *usbmisc; + + if (!data) + return 0; + + usbmisc = dev_get_drvdata(data->dev); + if (!usbmisc->ops->hsic_set_clk || !data->hsic) + return 0; + return usbmisc->ops->hsic_set_clk(data, on); +} +EXPORT_SYMBOL_GPL(imx_usbmisc_hsic_set_clk); + +int imx_usbmisc_term_select_override(struct imx_usbmisc_data *data, + bool enable, int val) +{ + struct imx_usbmisc *usbmisc; + + if (!data) + return 0; + + usbmisc = dev_get_drvdata(data->dev); + if (!usbmisc->ops->term_select_override) + return 0; + return usbmisc->ops->term_select_override(data, enable, val); +} +EXPORT_SYMBOL_GPL(imx_usbmisc_term_select_override); + static const struct of_device_id usbmisc_imx_dt_ids[] = { { .compatible = "fsl,imx25-usbmisc", @@ -504,6 +1198,10 @@ static const struct of_device_id usbmisc_imx_dt_ids[] = { .compatible = "fsl,imx7d-usbmisc", .data = &imx7d_usbmisc_ops, }, + { + .compatible = "fsl,imx7ulp-usbmisc", + .data = &imx7ulp_usbmisc_ops, + }, { /* sentinel */ } }; MODULE_DEVICE_TABLE(of, usbmisc_imx_dt_ids); @@ -532,6 +1230,18 @@ static int usbmisc_imx_probe(struct platform_device *pdev) data->ops = (const struct usbmisc_ops *)of_id->data; platform_set_drvdata(pdev, data); + vbus_wakeup_reg = devm_regulator_get(&pdev->dev, "vbus-wakeup"); + if (PTR_ERR(vbus_wakeup_reg) == -EPROBE_DEFER) + return -EPROBE_DEFER; + else if (PTR_ERR(vbus_wakeup_reg) == -ENODEV) + /* no vbus regualator is needed */ + vbus_wakeup_reg = NULL; + else if (IS_ERR(vbus_wakeup_reg)) { + dev_err(&pdev->dev, "Getting regulator error: %ld\n", + PTR_ERR(vbus_wakeup_reg)); + return PTR_ERR(vbus_wakeup_reg); + } + return 0; } |